The modern electroplater; a complete book considering fully the elementary principles of electro deposition of metals, their practical application and industrial use . nectionsfor the plating tank is indicated in Fig 42. Thismight be termed a two-wire system. Only two supplywires, or bus bars, positive and negative, are pro-vided. THREE WIRE SYSTEM In recent years the three wire, or multiple voltage,system of distribution has come into favor. Thestandard plating dynamo is usually wound to producea current pressure of six volts. There are manyclasses of work, however, which require voltages som
The modern electroplater; a complete book considering fully the elementary principles of electro deposition of metals, their practical application and industrial use . nectionsfor the plating tank is indicated in Fig 42. Thismight be termed a two-wire system. Only two supplywires, or bus bars, positive and negative, are pro-vided. THREE WIRE SYSTEM In recent years the three wire, or multiple voltage,system of distribution has come into favor. Thestandard plating dynamo is usually wound to producea current pressure of six volts. There are manyclasses of work, however, which require voltages some-what above six. In response to the demand forgreater flexibility, specially designed, two commuta-tor, double voltage generators are available. Whenwired, as shown in the diagram, Fig. 43, with neu-tral, positive, and negative supply lines, any voltagesup to 12 are obtainable. For the usual run of workthe 6-volt current is employed; when higher voltagesare desired, the switch is thrown to the 12-volt supplyline. Tank rheostats regulate the intermediate volt-ages. This system is particularly useful where highvoltage barrel plating is employed part of the ft S3 O 9 SI CHAPTER VELECTROPLATING TANK EQUIPMENT Tank Capacity—Three-Types of Plating Tanks—Still Tanks—Earthenware Tanks—Steel Tanks—Wooden Tanks*—Tank Construction—Advantage of Warm Plating Baths— Steam Coil Heater — Insulating Joint — EegulatingValve—Solution Agitation—Agitation with Air—TankEods—Plumbing—Eotating Plating Barrels—AutomaticPlating Machinery—Automatic Moving Tank—PrincipalAdvantages—General Design—Other Types—Tanks forPreparatory Processes—Pickling Tanks—Bright Dip-ping Tanks—Special Ventilating Hoods—Lye and PotashTanks—Hot Water Tanks—ScouriDg Tanks. TANK CAPACITY Plating-room efficiency is, in a large measure^ de-pendent upon the size, type, and location of the solu-tion tanks. A study of the type of work required andthe daily production neces
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectelectro, bookyear1920
